QuakeIndex

explosion · reviewed by a seismologist

M 1.9ml

5 km W of Dallas, Oregon

· -0.1 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Polk County 3 kmYamhill County 36 kmBenton County 48 kmLincoln County 52 kmMarion County 64 kmTillamook County 66 kmWashington County 74 kmLinn County 83 kmClackamas County 97 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.9 (ml)
Depth
-0.1 km below the surface
Felt
no reports yet
Nearest
Polk County, 3 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1789 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 730,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 520,000× the energy of this one
  3. Around the size people start to feel M 3.0 46× the energy of this one
  4. This earthquake M 1.9 about 21 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 44.9240, -123.3867. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Polk County, OR 3 km (2 mi) NNE of here earthquakes near Polk County
Yamhill County, OR 36 km (23 mi) S of here earthquakes near Yamhill County
Benton County, OR 48 km (30 mi) N of here earthquakes near Benton County
Lincoln County, OR 52 km (32 mi) NE of here earthquakes near Lincoln County
Marion County, OR 64 km (40 mi) W of here earthquakes near Marion County
Tillamook County, OR 66 km (41 mi) SSE of here earthquakes near Tillamook County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

55 earthquakes have been recorded within 50 km since this one.

  1. 2.0 0 km NE of Rose Lodge, Oregon
  2. 1.6 15 km SSE of Rose Lodge, Oregon
  3. 1.8 9 km ESE of Rose Lodge, Oregon
  4. 1.6 4 km NE of Lafayette, Oregon
  5. 1.6 3 km SE of Beaver, Oregon
  6. 1.7 6 km NNE of Falls City, Oregon
  7. 1.9 4 km E of Blodgett, Oregon
  8. 1.5 5 km ENE of Sheridan, Oregon
  9. 1.6 7 km NE of Amity, Oregon
  10. 1.7 4 km S of Fort Hill, Oregon
  11. 1.5 6 km W of Dallas, Oregon
  12. 1.7 4 km NE of Lafayette, Oregon
  13. 1.7 1 km SSE of Turner, Oregon
  14. 1.6 1 km W of Turner, Oregon
  15. 1.7 9 km SE of Amity, Oregon

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.